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...cheaper overall. In languages that throw exceptions more rarely (just about everyone), dwarf-exceptions should be cheaper. Dwarf-exceptions will still be worth investigating for Python eventually; we're just not prioritizing it. Anyone who wants us to prioritize it higher should bring data. :) IronPython's and Jython's experiences are interesting too. IronPython has had big problems with the cost of exceptions on the .NET platform. Jython has _not_ had problems in the JVM, which indicates that the two big virtual machines have made different tradeoffs for this. That would make me very hesit...

...ssume). But... in a dynamic language each variable must have an associated type information? So, why can't you use LLVM struct consisting of - integer type code (or anything else you like) - pointer to void which holds the actual data. What you're doing is rather interesting. There's IronPython which implements Python (a highly dynamic language) on top of .NET and which claims to be 2x faster than regular Python. However, I never seen any implementation details so don't know how dynamic features are dealt with. - Volodya

On Mon, Jul 20, 2009 at 10:09 AM, Mark Shannon<marks at dcs.gla.ac.uk> wrote: > Andrew Haley wrote: > If you can make your point without any references to any C/C++ specific > features it might be more convincing ;) > I did. Recall my mention of java/c#/ruby/python's finally/ensure blocks, or C#'s using blocks. For proper implementation, these need multi-level unwinds,

...asses implemented in Python." 3. "Python for .NET is based on Python 2.3.2. Note that this is a change from the preview releases, which were based on Python 2.2." === also PYTHON -- Iron Python Jim Hugunin (author of JPython/Jython and Numeric Python/NumPy) is developing "IronPython: A fast Python implementation for .NET and Mono." http://ironpython.com/ === Note: According to DotGNU -- IL, CIL & MSIL all refer to "the bytecode format that is used to represent compiled programs" http://www.southern-storm.com.au/pnet_faq.html#q1_9 Why CLR? 1. Cross-langua...

Evan, The problem is that I do not know the type of a target function at compile time. If you consider my code example, I don't know the type of 'i' until runtime (in fact, I can't even know a possible range of types 'i' may assume). Thanks, - Slava. On 4/21/05, Evan Jones <ejones at uwaterloo.ca> wrote: > On Thu, 2005-21-04 at 09:31 -0400, Vyacheslav Akhmechet

In the "Introduction and preliminaries" the "An Introduction to R" manual says about R: "... Among other things it has ... a well developed, simple and effective programming language (Called 'S') ... ". Now I'm a little confused. This means that language S is a component part of R? And S is not free? But R is free? Or the mentioned S is only "a free